It was entirely FIFA and it wasn't the Ballon d'Or as we know it today, it was the old FIFA player awards. After Maradona won the internet poll FIFA formed a "family committee" who unsurprisingly selected Pele. I don't know if FIFA ever released the actual individual votes cast by each "family" voter but they did release the "results" - Maradona did not receive a single vote from the "family" but Di Stefano did, go figure. It's highly questionable but I recall the furor when this happened. Pele was the FIFA poster boy while Maradona had his bad side and issues but was seemingly the fans' preference. A lot of people saw this as a farce.
https://en.wikipedia.org/wiki/FIFA_Player_of_the_Century
Since 1955, FIFA has had awards for
FIFA World Player of the Year and they decided to bring in the new millennium by conducting a public vote to decide the
FIFA Player of the Century. This was to be decided by votes on their official website, their official magazine, and a grand jury. Maradona won the Internet-based poll by wide margins, garnering 53.6% of the votes against 18.53% for Pelé. Despite the fact that
Eusébio, who played football professionally during Pelé's era, placed third in the poll, many observers complained that the Internet nature of the poll would have meant a skewed demographic of younger fans who would have seen Maradona play, but not Pelé. As a result, FIFA decided to add a second poll and appointed a "Football Family" committee composed of football journalists, officials, and coaches, who voted Pelé the best player of the century with 72.75% of the vote, thus both were joint winners of the award.
https://web.archive.org/web/2012042...ouri.com/Berichte/FIFA-Spieler/MalePlayer.pdf
https://www.cbc.ca/sports/pele-maradona-split-player-of-20th-century-award-1.223891
-Fans of Diego Maradona will continue to argue that their man was the people's choice in what was originally meant to be a people's poll.
-And reducing his honour to the "Internet" player of the century is a backhanded slap from FIFA.
-This "family" vote consisted of two components, ballots sent in from subscribers of the organization's quarterly magazine and those cast by a special international FIFA jury.
-Pele received 58 per cent of the magazine ballots and 87.5 per cent of the jury votes, while Di Stefano garnered seven per cent from the magazine and 12.5 per cent from the jury.
-Maradona, the favourite of 12 per cent of those voting by magazine, did not get a single jury vote.